Angelina Jolie and Brad Pitt got married at a chateau in France on Saturday, a spokesman for the couple has revealed.
It was initially believed they had just been on holiday in the south of France at the weekend.
But now it has emerged that they tied the knot in a private ceremony attended by their family and friends.
The wedding took place in a small chapel at Chateau Miraval, in the village of Correns, which the couple has rented since 2008.
In advance of the non-denominational civil ceremony, Pitt, 50, and Jolie, 39, obtained a marriage licence from a local California judge.
The judge also conducted the ceremony in France.
The spokesman said the couple's children took part in the wedding with Jolie's eldest sons Maddox and Pax walking her down the aisle.
Zahara and Vivienne threw petals while Shiloh and Knox served as ring bearers.
On Thursday Pitt was photographed for the first time wearing his wedding ring as he attended an event to promote his World War Two film Fury in Dorset.
The actor wore dark sunglasses as he entered the Tank Museum in Bovington and posed for photos.
Pitt and his new wife are due to resume filming on their new project, called By The Sea, in Malta this week.
The Hollywood stars, who met on the set of Mrs And Mrs Smith in 2005, have been engaged for more than two years.
They have been reported as saying they would not marry until it became an option for all couples.
Last year, they spoke of their close relationship after Jolie, who won an Oscar for best supporting actress in Girl, Interrupted, announced in a New York Times article that she had had a preventative double mastectomy.
Pitt described Jolie's decision, made because she carried the "faulty" gene BRCA1 which sharply increases her risk of developing breast and ovarian cancer, as "absolutely heroic".
In the article, Jolie wrote: "I am fortunate to have a partner, Brad Pitt, who is so loving and supportive.
"So to anyone who has a wife or girlfriend going through this, know that you are a very important part of the transition.
"Brad was at the Pink Lotus Breast Centre, where I was treated, for every minute of the surgeries.
"We managed to find moments to laugh together. We knew this was the right thing to do for our family and that it would bring us closer. And it has."
The couple are known for their humanitarian work and were recently in the UK for the Global Summit to End Sexual Violence in Conflict .
Jolie was also awarded an honorary damehood by the Queen for her charity work.
Jolie was previously married to actor Jonny Lee Miller and actor Billy Bob Thornton. Pitt was married to actress Jennifer Aniston until October 2005.